TY - JOUR T1 - Woman with blue thumb JF - Emergency Medicine Journal JO - Emerg Med J SP - 262 LP - 284 DO - 10.1136/emermed-2020-209683 VL - 38 IS - 4 AU - So Sakamoto AU - Yasuhiro Suyama Y1 - 2021/04/01 UR - http://emj.bmj.com/content/38/4/262.abstract N2 - A previously healthy 86-year-old woman presented to the ED with sudden-onset pain and bruising in her left thumb, beginning several hours before. She denied any history of trauma or cold exposure. Her vital signs were stable. Physical examination revealed a subcutaneous haematoma and swelling with a normal sensation. D-dimer levels were not elevated (figure 1).Figure 1 Bruising of the left thumb on admission.What is … ER -